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Lippe D, Elghawy O, Zucker AM, Yanagawa ESK, Mathews E, Ahmed YG, D’Elia PN, Bimson S, Walvoord RR. Synthesis of 7-Aminocoumarins from 7-Hydroxycoumarins via Amide Smiles Rearrangement. ACS OMEGA 2022; 7:35269-35279. [PMID: 36211046 PMCID: PMC9535735 DOI: 10.1021/acsomega.2c04653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 09/05/2022] [Indexed: 06/16/2023]
Abstract
N-Substituted 7-aminocoumarins can be synthesized from readily available 7-hydroxycoumarins via alkylation with α-bromoacetamides and subsequent tandem O → N Smiles rearrangement-amide hydrolysis. The key rearrangement sequence proceeds under mild conditions to provide convenient access to various N-alkyl and N-aryl products in moderate to high yields. The process is operationally simple, inexpensive, transition-metal-free, and can be telescoped into a one-pot process.
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Koga H, Negishi M, Kinoshita M, Fujii S, Mori S, Ishigami-Yuasa M, Kawachi E, Kagechika H, Tanatani A. Development of Androgen-Antagonistic Coumarinamides with a Unique Aromatic Folded Pharmacophore. Int J Mol Sci 2020; 21:ijms21155584. [PMID: 32759847 PMCID: PMC7432827 DOI: 10.3390/ijms21155584] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 07/31/2020] [Accepted: 07/31/2020] [Indexed: 01/06/2023] Open
Abstract
First-generation nonsteroidal androgen receptor (AR) antagonists, such as flutamide (2a) and bicalutamide (3), are effective for most prostate cancer patients, but resistance often appears after several years due to the mutation of AR. Second-generation AR antagonists are effective against some of these castration-resistant prostate cancers, but their structural variety is still limited. In this study, we designed and synthesized 4-methyl-7-(N-alkyl-arylcarboxamido)coumarins as AR antagonist candidates and evaluated their growth-inhibitory activity toward androgen-dependent SC-3 cells. Coumarinamides with a secondary amide bond did not show inhibitory activity, but their N-methylated derivatives exhibited AR-antagonistic activity. Especially, 19b and 31b were more potent than the lead compound 7b, which was comparable to hydroxyflutamide (2b). Conformational analysis showed that the inactive coumarinamides with a secondary amide bond have an extended structure with a trans-amide bond, while the active N-methylated coumarinamides have a folded structure with a cis-amide bond, in which the two aromatic rings are placed face-to-face. Docking study suggested that this folded structure is important for binding to AR. Selected coumarinamide derivatives showed AR-antagonistic activity toward LNCaP cells with T877A AR, and they had weak progesterone receptor (PR)-antagonistic activity. The folded coumarinamide structure appears to be a unique pharmacophore, different from those of conventional AR antagonists.
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Affiliation(s)
- Hitomi Koga
- Department of Chemistry, Faculty of Science, Ochanomizu University, 2-1-1 Otsuka, Bunkyo-ku, Tokyo 112-8610, Japan; (H.K.); (M.N.); (M.K.)
| | - Mai Negishi
- Department of Chemistry, Faculty of Science, Ochanomizu University, 2-1-1 Otsuka, Bunkyo-ku, Tokyo 112-8610, Japan; (H.K.); (M.N.); (M.K.)
| | - Marie Kinoshita
- Department of Chemistry, Faculty of Science, Ochanomizu University, 2-1-1 Otsuka, Bunkyo-ku, Tokyo 112-8610, Japan; (H.K.); (M.N.); (M.K.)
| | - Shinya Fujii
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan; (S.F.); (S.M.); (M.I.-Y.); (E.K.)
| | - Shuichi Mori
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan; (S.F.); (S.M.); (M.I.-Y.); (E.K.)
| | - Mari Ishigami-Yuasa
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan; (S.F.); (S.M.); (M.I.-Y.); (E.K.)
| | - Emiko Kawachi
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan; (S.F.); (S.M.); (M.I.-Y.); (E.K.)
| | - Hiroyuki Kagechika
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan; (S.F.); (S.M.); (M.I.-Y.); (E.K.)
- Correspondence: (H.K.); (A.T.); Tel.: +81-3-5280-8032 (H.K.); +81-3-5978-2716 (A.T.)
| | - Aya Tanatani
- Department of Chemistry, Faculty of Science, Ochanomizu University, 2-1-1 Otsuka, Bunkyo-ku, Tokyo 112-8610, Japan; (H.K.); (M.N.); (M.K.)
- Institute of Human Life Innovation, Ochanomizu University, 2-1-1 Otsuka, Bunkyo-ku, Tokyo 112-8610, Japan
- Correspondence: (H.K.); (A.T.); Tel.: +81-3-5280-8032 (H.K.); +81-3-5978-2716 (A.T.)
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Janicki I, Kiełbasiński P. Still–Gennari Olefination and its Applications in Organic Synthesis. Adv Synth Catal 2020. [DOI: 10.1002/adsc.201901591] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Ignacy Janicki
- Division of Organic ChemistryCentre of Molecular and Macromolecular Studies, Polish Academy of Sciences Sienkiewicza 112 90-363 Łódź Poland
| | - Piotr Kiełbasiński
- Division of Organic ChemistryCentre of Molecular and Macromolecular Studies, Polish Academy of Sciences Sienkiewicza 112 90-363 Łódź Poland
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Zakharov DO, Lipeeva AV, Gatilov YV, Makarov AG, Shults EE. Plant Coumarins: XVII. Synthesis and Transformations of 7-Hydroxy-2-oxo-2H-chromene-6-carboxamides. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2019. [DOI: 10.1134/s1070428019100099] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Synthesis and Antifungal Activity of 4‐ and 6‐(1
H
‐Pyrrol‐1‐yl) Coumarins, and their Thiocyanato Derivatives. ChemistrySelect 2019. [DOI: 10.1002/slct.201900842] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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